The MOUSE showing is located on the Fraser Plateau approximately 1.5 kilometres southwest of the Mouse Mountain prospect (Minfile 093G 003) and 12 kilometres east-northeast of Quesnel.

The Upper Triassic to Lower Jurassic Quesnel Belt consists of sedimentary and volcanic rocks considered to be the northern equivalents of the Nicola Group. Intruding these rocks are small felsic to intermediate calc-alkaline plutons of Lower to Middle Jurassic age which are comagmatic with the volcanic rocks of the upper part of the Nicola stratigraphy.

The Mouse area is underlain by three small plutons of feldspar porphyry. The Mouse Mountain stock intrudes Upper Triassic basaltic rocks and Lower Jurassic felsic to mafic polylithologic breccias. The Mouse showing is completely within a porphyritic quartz monzonite. Similar to Mouse Mountain, the Mouse showing is considered to be an alkalic porphyry copper-gold occurrence.

Only trace chalcopyrite occurs in the upper 20 metres of drill hole MM21-04, which defines the Mouse showing. Pyrite was disseminated throughout the 234 metre length of the hole. Increased pyrite is associated with dark, fine-grained fractures and blebs of magnetite.

The highlights of the 2021 drilling program were primarily in DDH MM21-04. A 12 metre intersection returned values of 0.156 per cent copper and 0.163 gram per tonne gold, including 2 metres of 0.306 per cent copper and 0.44 gram per tonne gold. In addition, a 28 metre intercept returned values of 0.104 per cent copper and 0.101 gram per tonne gold and a 3.2 metre intercept returned 0.428 per cent copper and 0.55 gram per tonne gold.

In 2012-13, CanAlaska Uranium Ltd. staked claims covering the Mouse Mountain showings. In 2014, CanAlaska evaluated and sampled the showings to compare and verify results from previous work. In 2019 Tech-X Resources Inc. conducted a small silt sampling program on their Mouse Mountain South property. Of 13 samples collected, 7 returned values of greater than 0.4 grams per tonne gold. In 2021, Omineca Mining and Metals Ltd. conducted 2000 metres of diamond drilling in 5 holes situated across an area approximately 1.5 kilometres southwest of the Mouse Mountain prospect (Assessment Report 39507).

See Mouse Mountain (Minfile 093G 003) for more information on the exploration history and geology of the area.